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Questions and Answers
What happens to the thoracic cavity during inspiration?
What happens to the thoracic cavity during inspiration?
- Moves downward
- Decreases in size
- Remains unchanged
- Increases in size (correct)
What occurs when the diaphragm relaxes during expiration?
What occurs when the diaphragm relaxes during expiration?
- Air rushes in
- Volume of the thoracic cavity decreases (correct)
- Lungs expand
- Pressure within the thoracic cavity decreases
How does air enter the lungs during inspiration?
How does air enter the lungs during inspiration?
- Due to decreased size of the thoracic cavity
- Due to decreased pressure inside the thoracic cavity (correct)
- Due to relaxation of the diaphragm
- Due to increased pressure inside the thoracic cavity
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